Fix Ref leak when using Godot getters

binding_generator.py

@@ -346,7 +346,7 @@ def generate_class_implementation(icalls, used_classes, c):
                 if is_enum(method["return_type"]):
                     return_statement += "return (" + remove_enum_prefix(method["return_type"]) + ") "
                 elif is_reference_type(method["return_type"]):
-                    return_statement += "return Ref<" + strip_name(method["return_type"]) + ">(";
+                    return_statement += "return Ref<" + strip_name(method["return_type"]) + ">::__internal_constructor(";
                 else:
                     return_statement += "return " + ("(" + strip_name(method["return_type"]) + " *) " if is_class_type(method["return_type"]) else "")
             else:
@@ -414,7 +414,7 @@ def generate_class_implementation(icalls, used_classes, c):
                 cast = ""
                 if is_class_type(method["return_type"]):
                     if is_reference_type(method["return_type"]):
-                        cast += "Ref<" + stip_name(method["return_type"]) + ">::__internal_constructor(__result);"
+                        cast += "Ref<" + strip_name(method["return_type"]) + ">::__internal_constructor(__result);"
                     else:
                         cast += "(" + strip_name(method["return_type"]) + " *) (Object *) __result;"
                 else:

include/core/Ref.hpp

@@ -199,6 +199,15 @@ public:
 
 		unref();
 	}
+
+	// Used exclusively in the bindings to recreate the Ref Godot encapsulates in return values,
+	// without adding to the refcount.
+	inline static Ref<T> __internal_constructor(Object *obj)
+	{
+		Ref<T> r;
+		r.reference = (T*)obj;
+		return r;
+	}
 };
 
 }